diff --git a/.hgtags b/.hgtags
index 236cc1be92..fecb4f2e18 100644
--- a/.hgtags
+++ b/.hgtags
@@ -6,3 +6,4 @@ cf1522d4c210d9bf3c45020b318126646f7ab295 5.8.0
 3e711a6f97ab7693ac702072837b3372ba36816c 6.0.0
 fe590734637d0a22bac00bf9b7e42b89855e1d85 6.2.0
 00abec422c0e6acb9cbd0db842f17ea7f9366112 6.4.0
+e35a7303d21086977abc7c83895f5114bdf1e96e 6.6.0